[Kingdom] Animalia Linnaeus, 1758 - animals
   Grade Plastidozoa [monotypic]
     [Phylum] Protozoa (Goldfuss, 1818) C.T. von Siebold, 1854 see Kingdom Protozoa Goldfuss, 1818
       Grade Gymnomyxa
         Class Gymnomyxa
           Order Radiolaria Müller, 1858 see Phylum Actinopoda Calkins, 1902
             Genus Actinospherium Lankester, 1877, nom. null. see Genus Actinosphaerium Stein, 1857